GB890587A - Improvements in or relating to trenching machines - Google Patents

Improvements in or relating to trenching machines

Info

Publication number
GB890587A
GB890587A GB1467759A GB1467759A GB890587A GB 890587 A GB890587 A GB 890587A GB 1467759 A GB1467759 A GB 1467759A GB 1467759 A GB1467759 A GB 1467759A GB 890587 A GB890587 A GB 890587A
Authority
GB
United Kingdom
Prior art keywords
trench
electrical
april
axis
boom
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1467759A
Inventor
John Dryden Cullimore Allen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
John Allen & Sons Oxford Ltd
Original Assignee
John Allen & Sons Oxford Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by John Allen & Sons Oxford Ltd filed Critical John Allen & Sons Oxford Ltd
Priority to GB1467759A priority Critical patent/GB890587A/en
Publication of GB890587A publication Critical patent/GB890587A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
    • E02F5/145—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids control and indicating devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

890,587. Trench-digging machines. ALLEN & SONS (OXFORD) Ltd., JOHN. April 27, 1960 [April 29, 1959], No. 14677/59. Class 68(1). Incorporated in a trench-digging machine are means, preferably an electrical servomotor system, for automatically controlling the means for raising and lowering the trench excavating unit to maintain a predetermined level or slope of the bottom of the trench being excavated irrespective of variation of the surface contours of the ground. The control means consists of a sliding shoe 33 pivoted at 34 to a lever 35 rotatable about an axis 36 to control an electronic signalling device 37 for signalling any rotational movement of the arm 35 about the axis 36. The device 37 is rigidly secured to the bucket wheel or bucket chain-supporting boom that constitutes the vertically movable excavator unit. The signals from the device 37 are fed by electrical circuitry to electrical control means regulating the boom-adjusting jacks 19.
GB1467759A 1959-04-29 1959-04-29 Improvements in or relating to trenching machines Expired GB890587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1467759A GB890587A (en) 1959-04-29 1959-04-29 Improvements in or relating to trenching machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1467759A GB890587A (en) 1959-04-29 1959-04-29 Improvements in or relating to trenching machines

Publications (1)

Publication Number Publication Date
GB890587A true GB890587A (en) 1962-03-07

Family

ID=10045591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1467759A Expired GB890587A (en) 1959-04-29 1959-04-29 Improvements in or relating to trenching machines

Country Status (1)

Country Link
GB (1) GB890587A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520476A1 (en) * 1982-01-22 1983-07-29 Pelsy Gilles METHOD AND DEVICE FOR OBTAINING DATA RELATING TO THE POSITION IN A VERTICAL PLAN OF A FLEXIBLE DUCTING DURING LANDFILLING
EP0405950A2 (en) * 1989-06-27 1991-01-02 Bruff Group Limited Digging machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520476A1 (en) * 1982-01-22 1983-07-29 Pelsy Gilles METHOD AND DEVICE FOR OBTAINING DATA RELATING TO THE POSITION IN A VERTICAL PLAN OF A FLEXIBLE DUCTING DURING LANDFILLING
EP0084991A1 (en) * 1982-01-22 1983-08-03 Gilles Pelsy Method and device for obtaining data relating to the position in a vertical plane of a flexible conduit during burying
EP0405950A2 (en) * 1989-06-27 1991-01-02 Bruff Group Limited Digging machine
EP0405950A3 (en) * 1989-06-27 1991-11-06 Bruff Group Limited Digging machine

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